moon earth and sun

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Across
  1. 3. A moon phase that look like a full more then a half moon
  2. 6. To shine light on an object
  3. 8. The nearly path smaller object like the moon travels around the earth
  4. 10. The border between light and dark side of moon
  5. 12. A moon phase in which the moon is not as visible from earth
  6. 13. The amount of time it takes for a planet to complete one orbit around a star or stars
  7. 14. The relative size of things
  8. 17. The sun the planets that orbit the earth
  9. 18. The stars that is main source of light at center of of are solar system
Down
  1. 1. A planet outside are solar system
  2. 2. A rocky sphere that travels
  3. 4. A moon phase that looks like a full circle from earth
  4. 5. Something we observe over and over again
  5. 7. When moon is completely dark
  6. 9. An object diagram our computer program that helps us understand by making it simpler
  7. 11. The shape of the illuminated part of the moon as it appears from earth
  8. 15. A moon outside our solar system
  9. 16. moon A phase that looks like less then half a circle from earth